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71.
Ryosuke IWAMA Tsubasa SATO Masaaki KATAYAMA Shunsuke SHIMAMURA Hiroshi SATOH Toshihiro ICHIJO Kazuhisa FURUHAMA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(8):1033-1035
We examined the correlation between the glomerular filtration rate (GFR) estimated from an equation based on the serum iodixanol clearance technique and International Renal Interest Society (IRIS) stages of chronic kidney disease (CKD) in cats. The equation included the injection dose, sampling time, serum concentration and estimated volume of distribution (Vd) of the isotonic, nonionic, contrast medium iodixanol as a test tracer. The percent changes in the median basal GFR values calculated from the equation in CKD cats resembled those of IRIS stages 1–3. These data validate the association between the GFR derived from the simplified equation and IRIS stages based on the serum creatinine concentration in cats with CKD. They describe the GFR ranges determined using single-sample iodixanol clearance for healthy cats and cats with various IRIS stages of CKD. 相似文献
72.
Selection for high and low oxygen consumption altered hepatic mitochondrial energy efficiency in mice 下载免费PDF全文
Yu Hong Astrid Ardiyanti Motoi Kikusato Tomoyuki Shimazu Masaaki Toyomizu Keiichi Suzuki 《Animal Science Journal》2015,86(9):818-825
Selection for high (H) and low (L) oxygen consumption (OC) as an indirect estimation of maintenance energy requirement was determined. Feed intake and body weight were measured and feed conversion ratio (FCR) of 4–8‐week‐old mice was calculated. Respiratory activity of hepatic mitochondria was measured at 12 weeks. Total feed intake (H: 103.74 g, L: 97.92 g, P < 0.01), daily feed intake (H: 3.70 g/day, L: 3.50 g/day, P < 0.01) and FCR (H: 18.79, L: 15.50, P < 0.01) were significantly different between lines. The line by sex interaction was significant for FCR. No line differences were observed in males; and the FCR of the H line was greater than in the L line in females. H line mice had the highest hepatic mitochondrial respiratory activity in state 2 (P < 0.01), the highest uncoupled respiratory rate of mitochondria in the presence of an uncoupling agent (P < 0.001), and the mitochondrial proton leak. The adenosine diphosphate/ O ratio was highest in the L line (P < 0.05). This suggests that the selection for high and low OC induced differences in basal mitochondrial respiration and basal metabolism, resulting in difference in FCR between H and L lines. 相似文献
73.
Habitat structure in Oku-Nikko, Japan, has been substantially modified by the overabundance of sika deer (Cervus nippon). A deer-proof fence (15.0 km and 900 ha) was constructed in 2001 to conserve vegetation. Although the understory inside the fence is dominated by Sasa nipponica (hereafter, Sasa), an important forage plant for deer, that outside the fence is dominated by Aster ageratoides leiophyllus (hereafter, Aster), an unpalatable plant to deer, and, partly, by bare floor. In this study, we examined the effects of deer on ground-dwelling insects and earthworms, the primary food resources of raccoon dogs (Nyctereutes procyonoides), and, thus, the bottom-up cascading effects of the herbivore on the omnivorous carnivore. Between July and September 2008, we examined the abundance of insects and earthworms by pitfall trapping and hand-sorting methods, respectively, both inside and outside the fence. The abundance of earthworms and insects (Scarabaeidae and Rhaphidophoridae) was higher on forest floors with Aster and/or bare floors outside the fence than on those with Sasa inside the fence. These results indicate that the increasing deer population in this area probably increased the number of these invertebrates outside the fence by modifying understory vegetation and/or depositing dung. Furthermore, the sighting rates of raccoon dogs obtained by spotlight counts were greater outside than inside the fence, suggesting that deer probably exert bottom-up cascading effects on raccoon dogs, at least during May to November, when the invertebrates are predominantly fed on by the omnivorous carnivore. 相似文献
74.
Yuko TOISHI Nobuo TSUNODA Masaaki TAGAMI Hiromitsu HASHIMOTO Fumiki KATO Tsukasa SUZUKI Kentaro NAGAOKA Gen Watanabe Shota TOKUYAMA Kiyoshi OKUDA Kazuyoshi TAYA 《Journal of Equine Science》2013,24(3):47-51
Evaluation of a new chemiluminescent enzyme immunoassay, the PATHFAST assay system
(PATHFAST), for measurement of circulating progesterone in mares was performed. Five mares
at the mid-luteal stage were administrated a single i.m. injection of prostaglandin F2α
analog (PGF2α; cloprostenol 250 μg/ml), and then blood samples were collected from the
jugular vein at 0, 15, 30 and 45 min, at one-hour intervals until 24 and at 48 hr via a
catheter in the jugular vein. To monitor the physiological changes in circulating
progesterone in mares after induced luteolysis, concentrations of progesterone in whole
blood and serum samples were measured by PATHFAST. In addition, concentrations of
progesterone in serum samples measured by PATHFAST were compared with those measured by
radioimmunoassay (RIA) and enzyme immunoassay (EIA). Using PATHFAST, the serum
concentrations of progesterone in mares correlated highly with those of whole blood
samples (r=0.9672, n=88). The serum concentrations of progesterone as measured by PATHFAST
correlated well with RIA (r=0.9654, n=88) and EIA (r=0.9323, n=112). An abrupt decline in
circulating progesterone in whole blood samples was observed within 2 hr (50%), followed
by a gradual decline until 48 hr later. The results for progesterone in whole blood
samples correlated highly with those in serum samples, and the declining pattern
paralleled that of the serum samples. These results demonstrated that PATHFAST is useful
in the equine clinic as an accurate diagnostic tool for rapid assay of progesterone within
26 min, using unextracted whole blood. 相似文献
75.
Jeong-Chae Park Masaaki Oyama Jeong-Hoon Lee Keita Kodama Yasuhiko Ohta Atsuko Yamaguchi Hiroaki Shiraishi Toshihiro Horiguchi 《Fisheries Science》2013,79(2):193-201
Reproductive traits are among the primary determinants of population dynamics, and their changes could affect stock size. We investigated differences in reproductive traits of the starspotted smooth-hound Mustelus manazo in Tokyo Bay between the 1990s (a low-stock period) and the 2000s (a high-stock period). Peak timings of mating (May–July), ovulation (May–June), and parturition (May–June) were similar between the two periods. However, the size at first maturity in the 2000s was smaller than that in the 1990s for both sexes. In addition, embryo-related parameters differed greatly between the two periods. Slopes of size–fecundity regression in the 2000s decreased to 43–73 % of the 1990–1996 values, suggesting a substantial decline in fecundity during the 2000s. Frequency distribution of the maximum ovum diameter during the ovulation season showed two distinct two modes in 1990s while it showed a substantial dispersion during the 2000s, implying that changes occurred in the developmental pattern of ova in the ovary. Undeveloped eggs were present in the uteri with low frequency from September to May during the 2000s, but they were totally absent from September through May in the 1990s. The increased number of remnant undeveloped eggs that did not become embryos may explain the fecundity decline during the 2000s. 相似文献
76.
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78.
Katsuki Adachi Masaaki Omine Mitsuho Sugimoto Takanori Ishii Hiroshi Niimi Takayuki Suzuki 《Plant Production Science》2016,19(1):125-131
We developed transplantation cultivation method of case-held tuber seedlings (CTS), which was derived from direct planting method of seed tubers, and applied this method to the sweet potato cultivar Beniharuka. A plastic case made of polypropylene was designed for cultivation of CTS. Seed tubers of cultivar Beniharuka in the range of 30–80 g were cut in half. The half-cut tubers were placed inside the plastic cases, and the cases were filled with a commercial soil mix. The case-held tubers were incubated under natural sunlight in a glass house. After 3–4 wk, the CTS were transplanted into a field. Mother tuber (seed tuber) enlargement was suppressed by the plastic confinement of the cases, and daughter tubers were formed above the case as vine-root-originated tubers. In the field experiments in 2012 and 2013, daughter tuber yields were increased 19% and 21% by case-held tuber seedling transplanting (CTST) over conventional vine-planting (VP), the number of daughter tubers per plant in CTST were 36 and 68% higher than in VP, and the mother tuber yields were limited to 2.1 and 4.3% of the total fresh yield of mother and daughter tubers, respectively in 2012 and 2013. Application of CTST method to cultivar Beniharuka enhanced tuber yield, increased the number of daughter tubers per plant, downsized daughter tubers compared to VP, and mother tuber enlargement was suppressed by case-holding. The CTST method is expected to produce more and smaller good in shape tubers of cultivar Beniharuka compared to VP. 相似文献
79.
80.
Ayumi Kobayashi Sayaka Takahashi Masaaki Ono Kiyoshi Tanaka Masato Kishima Masato Akiba Ikuo Uchida 《Acta veterinaria Scandinavica》2014,56(1):31